Rash on babies face

Kelcee

So I recently noticed my babies face breaking out in what looks like a rash with baby acne he is almost 7 months old. He has hold a cold, but we are also trying to switch from gerber soothe to target brand gentle because of the price, we wanted to try and see if he could handle generic brand, so we don’t have to pay a arm and leg. It seemed to be going away today, I fed him a bottle earlier with the new formula and he never broke out, but hours later he broke out again, we started out mixing it with the gerber soothe and he never broke out, I’m pretty sure he had this rash prior to switching as well, I just can’t figure out if it’s from the formula or not because of when it pops up. I also fed him just gerber soothe to see if it was the formula but it popped right back up again... any suggestions?